Finding the Third Proportional to 1,069,807.50 and 2,188,799.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069,807.50 : 2,188,799.72 = 2,188,799.72 : x
2. Step 2: Convert to fraction form
   1,069,807.50/2,188,799.72 = 2,188,799.72/x
3. Step 3: Cross multiply
   1,069,807.50x = 2,188,799.72 × 2,188,799.72
4. Step 4: Simplify right side
   1,069,807.50x = 4,790,844,208,800.08
5. Step 5: Solve for x
   x = 4,790,844,208,800.08/1,069,807.50
6. Step 6: Final answer
   x = 4,478,230.16